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JOS. VELSI-I, OF PHILADELPHIA, PENNSYLVANIA.

LOOM.

' Specification of Letters Patent No. 21,098, dated August 3, 1858.

To all whom t may concern.'

Be it known that I, JOSEPH IVnLsI-I, of the city of Philadelphia, in the State of Pennsylvania, have invented a new and useful Improvement in Looms Used for VVeaving Checks and other Like Party-Colored Cloth; and I do hereby declare that the following is a full, clear, and exact description of the construction and operation of the same, reference being had to the accompanying drawings, making a part of this specification, in which- Figure l, is a representation of one side of such a loom with the improvement applied; and Figs. 2 and 3, views of the face and back of the pattern wheel of the loom, with the said improvement also applied thereto, like letters in the different gures indicating the same parts.

My invention has for its object the making the pattern wheel, or its equivalent, perform the functions which have hitherto required the substitution of either the one or the other of a series of smaller pattern wheels, not only because of the excess in the number of notches in such wheel, but because also or the impossibility of dividing the whole number of its notches by the various numbers of shots required to produce the different patterns of cloth, without a fraction resulting. Hence each loom of this class has heretofore required to be furnished with the series of different sized pattern wheels before mentioned, and which materially increase the original cost, besides involving the time and trouble required in the substitution of one wheel for another in reducing the number of shots to suit the pattern of cloth required.

It consists in the application of a jointed lever to the loom, so that it shall be made to operate upon the pattern wheel or .its equivalent, to reduce its normal capacity or the number of shots which it would otherwise produce or allow, aswell as to render the aggregate number of its notches divisible, without a fraction resulting, by the number of shots required to be made in working any pattern of clot-h thereby, and so to render the one pattern wheel adequate to the production of any number of shots below its normal capacity, at each full rotation of the same upon its axis.

Referring to the drawing-A, is the frame of the loom; B, the shuttle box; C, the pattern former, in this case, a wheel;

D, the cam on the main shaft, E, which at every rot-ation of the latter actuates the lever and pawl F and F, so as to give the usual periodical motion of the pattern wheel; Gr, another cam on the same shaft, and which forces the wedge lever H, into the steppiece I, as it is guided by the lever, K,

which bears alternately against the outer side of the patternwheel (C) and the different pins, p p, which are arranged to project therefrom so as to raise and depress the shuttle box (B) by means of the lever, I, in the usual manner. The parts thus referred to are common and well known; but the pattern wheel (C) in the drawing has 2 8 notches and would therefore govern 46 shots at each rotation, and would not be capable of working continuously a pattern 0f 3G shots-as for instance, 16 blue, 8 white, 1I red, and S white. There are therefore in this case l0 shots or five notches to be avoided in every rotation of the pattern wheel, and I effect this result in the following manner: L, is a ointed lever placed on the axle piece, g, of the pattern wheel (C) and between the latter and the frame of the loom, as seen in the drawings (in dotted lines in Fig. l) so that it can be oscillated on the said axle piece. M, is a rigid rod adjustably connecting the lower end of the lever (L) with the wedge lever On the inner side of the pattern wheel (C) live pins, 11F-a, corresponding in number with the excess of notches in the wheel, are inserted, so as to project from the inner side, in the usual screw pin holes of the wheel, as seen in Figs. 2 and 8. The lever (L) is formed and jointed so as to pass over the ends of these pins (n n) when its upper end is moved back, but to catch against them and thus force forward the pattern wheel, one notch for each pin, as it is moved forward independently of the pawl (F) and while the said pawl is not in action; consequently it renders the ve surplus notches inoperative, and thus by means of pins inserted as described in the inner side of the wheel (C) any of the notches of the wheel may be dropped at pleasure and the wheel thus adapted to produce any of the patterns of cloth that may be required. O, is a cord which connects the upper end of the lever (L) to the usual belt-shifter so that it will draw the lever (L) out of Contact with the pins (1t-4t), and leave the wheel free when the shuttle thread breaks. It is obvious that the lever (L) may be operated in the same manner by connecting it With some other moving` part of the loom or by plac inganother cam on the main shaft for the purpose, and also that the same principle may be applied, substantially in the same manner, to Work the continuous chain (which is sometimes used as a substitute for the pattern Wheel) so as to make it perform the same result, Withoutdiminishing the number of its links, as heretofore required.

Having thus fully described and set forth the construction and mode of operation of my invention, I proceed to state that I do not limit my claim to the described construction, arrangement, or mode of operating the lever (L) or its equivalent, but

What I claim as my invention and desire to secure by Letters Patent is- Reducing the normal capacity of the pattern Wheel or its equivalent, so as to make it perform the functions described substantially in the manner and for the purpose set forth and described.

JOSEPH WELSH.

Witnesses:

BENJ. MoRIsoN, JNO. B. KENNEY. 

